chrome-headless support

[htoooth]

Now, chrome support headless mode. It can run without Xvfb lib. I advise that the wechaty project should move from phantomjs to chrome-headless.

There are some projects to referred.

1. puppeteer
2. chromeless

[huan]

That's awesome, Thank you very much for the advice!

The chrome headless mode will make the infrastructure of Wechaty become simple and easy to setup. I'd like to switch to that.

Will dive into it when I have time, and PR is welcome!

Updates

• Selenium With Headless Chrome On Travis CI
• Getting Started with Headless Chrome

Requirement

Chrome Version:

Caution: Headless mode is available on Mac and Linux in Chrome 59. Windows support is coming in Chrome 60. To check what version of Chrome you have, open chrome://version.

[huan]

After implementing the headless chrome, I found that we have to wait until the chrome V62 to be released, which is planned in Oct 2017. That is because when we are using --headless args, chrome version below 62 will not allow the self-signed certificate to be used when visiting https://localhost.

See: https://bugs.chromium.org/p/chromium/issues/detail?id=721739#c26

[huan]

Wechaty version v0.8.148 or above can enable Chrome headless mode by setting the env with WECHATHY_HEAD=chrome-headless